﻿// Copyright 2012-2017 Dmitry Kischenko
//
// Licensed under the Apache License, Version 2.0 (the "License"); 
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software 
// distributed under the License is distributed on an "AS IS" BASIS, 
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 
// express or implied. 
// See the License for the specific language governing permissions and 
// limitations under the License.
using System;
using System.Globalization;
using System.Windows.Data;

namespace xFunc.Converters
{

    [ValueConversion(typeof(bool), typeof(bool))]
    public class InverseBooleanConverter : IValueConverter
    {

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (targetType == typeof(bool))
                return !(bool)value;

            return null;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (targetType == typeof(bool))
                return !(bool)value;

            return null;
        }

    }

}
